diff --git a/src/common/common/purl_base.h b/src/common/common/purl_base.h
index 783daf0..3e6bf46 100644
--- a/src/common/common/purl_base.h
+++ b/src/common/common/purl_base.h
@@ -52,7 +52,7 @@ struct FileTypeData {
   const char *mimetype;
   const char *highlightModeName;
 };
-#ifndef TQ_TQMOC_RUN // needed because TQMOC does not expand defines...
+#ifndef Q_MOC_RUN // needed because MOC does not expand defines...
 class FileType : public GenericEnum
 {
 public: